This commit compensates for buggy poll(2)

implementations. Asterisk has, for a long time,
had its own implementation of poll(2) which
just used the input arguments to call select(2).
In 1.4, this internal implementation was used
for Darwin systems. This was removed in Asterisk
trunk at some point, but it seems as though this
was not the right move to make.

On Mac OS X, it appears as though the poll used
to gather CLI input does not respond properly
when connecting via a remote Asterisk console.
Reverting to the use of Asterisk's poll fixed
the issue.

Also, there is now an option for the configure
script, --enable-internal-poll, which will allow
for anyone to use Asterisk's internal poll
implementation in case they suspect that their
system's poll implementation is buggy.

closes issue #11928)
Reported by: adriavidal
Patches:
      1.6.0-configurev2.patch uploaded by putnopvut (license 60)



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@134125 65c4cc65-6c06-0410-ace0-fbb531ad65f3

CHANGES

@@ -818,3 +818,9 @@ Miscellaneous
      as a backtrace of the stack which led to the lock calls.
   * users.conf now sports an optional alternateexts property, which permits
     allocation of additional extensions which will reach the specified user.
+  * A new option for the configure script, --enable-internal-poll, has been added
+    for use with systems which may have a buggy implementation of the poll system
+	call. If you notice odd behavior such as the CLI being unresponsive on remote
+	consoles, you may want to try using this option. This option is enabled by default
+	on Darwin systems since it is known that the Darwin poll() implementation has
+	odd issues.

configure

@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 132643 .
+# From configure.ac Revision: 132705 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for asterisk 1.6.
 #
@@ -1578,6 +1578,7 @@ Optional Features:
   --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
   --enable-dev-mode    Turn on developer mode
   --disable-largefile     omit support for large files
+  --enable-internal-poll	Use Asterisk's poll implementation
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -15597,6 +15598,20 @@ fi
 
 
 
+# Check whether --enable-internal-poll was given.
+if test "${enable_internal_poll+set}" = set; then
+  enableval=$enable_internal_poll; case "${enableval}" in
+		y|ye|yes) HAS_POLL="";;
+		n|no) HAS_POLL="${HAS_POLL}" ;;
+		*) { { echo "$as_me:$LINENO: error: bad value ${enableval} for --enable-internal-poll" >&5
+echo "$as_me: error: bad value ${enableval} for --enable-internal-poll" >&2;}
+   { (exit 1); exit 1; }; } ;;
+	esac
+fi
+
+
+
+
 
 # https support (in main/http.c) uses funopen on BSD systems,
 # fopencookie on linux

configure.ac

@@ -327,8 +327,18 @@ AC_CHECK_HEADER([sys/poll.h],
    [HAS_POLL=1]
    AC_DEFINE([HAVE_SYS_POLL_H], 1, [Define to 1 if your system has working sys/poll.h]),
    )
+
+AC_ARG_ENABLE(internal-poll,
+	[  --enable-internal-poll	Use Asterisk's poll implementation],
+	[case "${enableval}" in
+		y|ye|yes) HAS_POLL="";;
+		n|no) HAS_POLL="${HAS_POLL}" ;;
+		*) AC_MSG_ERROR(bad value ${enableval} for --enable-internal-poll) ;;
+	esac])
 AC_SUBST(HAS_POLL)
 
+
+
 # https support (in main/http.c) uses funopen on BSD systems,
 # fopencookie on linux
 AC_CHECK_FUNCS([funopen fopencookie])

main/Makefile

@@ -42,8 +42,13 @@ OBJS+=say.o
 AST_LIBS += $(SSL_LIB)
 AST_LIBS += $(BKTR_LIB)
 
+
 ifeq ($(POLL_AVAILABLE),)
   OBJS+=poll.o
+else
+  ifneq ($(findstring darwin,$(OSARCH)),)
+    OBJS+=poll.o
+  endif
 endif
 
 ifneq ($(findstring $(OSARCH), linux-gnu uclinux linux-uclibc linux-gnueabi ),)